This is a free application to make high-quality voice calls on your Android phone, using the G729, PCMU, and PCMA codecs. It supports both the speaker and the microphone and comes with a very user-friendly interface.

You will get a low-latency, high-quality call, with low bandwidth usage. This makes it suitable for use with a 3G/Edge/Wi-Fi connection.

It comes with a real-time SIP status message, so you can check the status of the connection. It supports a variety of SIP-based protocols, including the one used in the H.323 specification.

You will get an interactive UI, where you can see your call history and make calls using your address book.